William gee



momma.

W. GEE.

' ELEGTRIG BURGLAR AND FIRE ALARM.

No. 423,753. Patented Mar. 18,1890.

Izva 59 7 jflffllzawia M N. PEI'ERS. *Phvlwuthognphnr, wmin m. a. c.

UNITED STATES PATENT OFFICE.

WILLIAM GEE, OF NEW YORK, N. Y.

ELECTRIC BURGLAR AND FIREIALARMD,

SPECIFICATION forming part of Letters Patent No. 423,753, dated March 18, 1890. Application filed November 19, 1889. Serial No. 330,829. (No model.)

My invention relates to devices for making and breaking the circuit of an'electric burglar or other similar alarm in which the circuit is established and the alarm operated by the 7 within their jambs.

opening or moving of a door or window-sash for obtaining ingress to a building or room surreptitiously.

It is the purpose of my said invention to provide a novel and simple circuit-closing attachment capable of being'applied to and removed from a door or window instantaneously and without marring the wood-Work, means being provided whereby the attachment may be fitted to an entrance opening of any construction with due compensation for the want of a proper engagement between the movable and the immovable parts, or, in other words, for the varying degree of accuracy with which doors and windows in different parts of the same house, as well as in separate houses, fit

It is one purpose, therefore, of my invention to provide, simple mean s,

easily operated. without previous skill or special experience, whereby such attachment shall be rendered applicablewithout change other than adjustment of the parts of the attachmentjn order to adapt them to different locations and to different constructions of the parts with which said attachment is connected.

It is a further purpose of my invention to combine with an electric burglar-alarm a thermo-electric indicator capable of being set or. adjusted in such manner that it shall re, spond operatively to a rise of temperature passing any given point upon the thermic scale, according to the adjustment given to the heat-indicating and circuit-closing mechanism. V

The invention consists in the several novel features of construction and new combinations of parts hereinafter fully set forth, and then definitely pointed out in the claims following this specification.

In order to enable others skilled in the art to practice my said invention, I will proceed to describe the same in detail, reference being made to the accompanying drawings, in which Figure l is a front elevation and diagram of an apparatus embodying my invention. Fig. 1 is an end elevation of the casing, showing the removable cover and bottom. Fig. 2 is an end elevation of the thermostat, the battery, bell, and burglar-alarm being removed. Fig. 3 is a detail view of thescaleplate, showing its attachments. Fig. 4 is a detail side elevation of the circuit-making from connection with the door orwindow.

Fig. 5 is a plan view of the same, showingthe wire-connecting clip. Fig. 6 is a detail view showing the construction of the joint connecting the parts of the device shown in Figs. 4 and 5. Fig. 7 is a detail view of the wireconnecting clip. Fig. 8 is a sectional view of the parts shown in Fig. 6.

In the said drawings, the reference-numeral- 1 denotes the casing or frame within which the operative parts are assembled. Attached to the vertical wall thereof is a bracket 2, having acircular plate 3 standing at right angles to the supporting-wall, and having a central opening to receive the end of the stem 4. Upon this stem I mounta series of expansion-disks 5, each consisting of a chamber of cylindrical form constructed of two sheets of thin metal joined at their edges to form a tight hermetically-sealed receptacle. One of the sheet-metal portions of each expansiondisk may be provided with circular concentric corrugations to increase the surface area, and in this as well as other respects the construction of these expansion disks does not 5 which is most remote from the plate 3 is formed or mounted a neck, stem, or spindle 8,

which passes through a central opening in the circular plate 7 L This plate is provided with a flat extension-piece 9, projecting from that edge next to the 'wall of the casing and havmg no further connection with said wall.

Formed or mounted upon the outer edge of the plate 7 is a fiat metallic bracket 10, which extends parallel with the axis of the frame conta ning the expansion-disks to the center of sald frame, or thereabout, from which point it is carried directly upward at right angles with the horizontal portion. Upon the upper end of. the v'erti'cahmemberof the frame is mounted an arc-shapedplate 1.2, graduated to form a thermal scale.

Upon the extension-piece 9 is mounted a bracket-support 13, having a foot which is provided with an elongated slot 14, through which the attaching-screw passes, thus enabling the bracket to be supported and adjusted upon the horizontal extension piece 9. Upon the outer end of the'bracket-support 13 is formed a nipple 15, which receives'a pivotal bearing 16, upon which is mounted a lever 17, one

end whereof is connected to the end of the parallel with the horizontal member of the bracket 10. Upon the vertical member of this bracket is attached a pivot-pin 21, upon which is mounted an index-arm 22, having its end which drops below the pivot-pin 21 connected to the link 20. It will be seen that by this construction and arrangement of parts the expansion and contraction of the disks 5 will advance and retract the stem or neck 8 and advance and retract the point of the index-arm upon the graduated scale.

Upon the vertical member of the bracketframe 10 is mounted a binding-post 23, which is not in electrical engagement with the scaleplate 12 by reason of the fact that the latter is insulated from the vertical arm of the bracket by means ofirubber or wooden disks 24, care being taken to prevent the contact of the fastening-screws 25. A binding-post 2 6 is mounted upon the scale-plate 12, which is tem erature-has risen toadan er oint I j P g P 7 employ a simple electric bell 31, or other form of alarm, which is operated, preferably, by a dry battery 32, though any other form of opencircuit battery may be employed. I have shownthe alarm arranged in the same casing with the other mechanism; but this is merely for the sake of illustration, as it may be, and usually is, located at some distant point, such as an office, engine-house, or other suitable point.

The electrical connect-ions are 26 is connected by a wire 34 with one of the binding-posts 35 of the electric bell. A wire -36 leads from the other binding-post of the bell mechanism back, to the other pole of the battery, and the circuit is established by the contact of the platinum point 29 and tip 30.

I By adjusting the slide 27 the alarm may be caused to sound at any temperature indicated by the scale-plate, and it isevident, also, that by a simple reversal of'arrangement a' low temperature may be announced as well as the opposite. v

The casing 1 is provided with a removable as follows: A wire 33 leads from one pole of the battery to the binding-post 23, and ,ther binding-post cover or lid 37, having a bottom 38, and when the apparatus is in use both are thrown open to permit a free access of heat to the apparatus.

With the apparatus thus described Icombine a burglar-alarm so constructed that it is detach'ablefrom and attachable to any of the ordinary points on entrance to a building. This part of myinvention consists of what I term an electric wedge, composed of two plates 89 and 40,fo r med of brass. At its end the plate 40 is provided with a transverse slot 41, having such dimensions that it will admit the'end of the plate 39, which is provided with two short longitudinal slots 42, After insertion the two outside prongs 43 are turned toward the end of the plate 40, and the central portion 44 is turned in the opposite direction, riveting the tWO parts firmly together and to apoint when viewed in side elevation, forming a wedge. The upper member of this wedge is preferably provided with a co rrugated surface 45, beyond which the plate 39 is bent into verticalposition to form a shoulder46. It is then bent into or -nearly into parallelism with the lower plate 40.

' The plate 40 is provided with a wooden wedge 47, adjustable longitudinallythereon. Between the two plates 39 and 40 is interposed a U-shaped spring 48, one arm of which is riveted to the upper plate 39, while the other arm lies in a central groove or channel 49 in the wedge 47. This wedge is provided with a'chan'nel in its lower face, which receives the plate 40 and serves to guide the longitudinal adjustment of the wedge. v

Upon the free end of the plate 40, but entirely insulated from it by rubber or other disks 50 is a screw 51, which projects upward through an opening 52 inthe free end of the plate 39, such opening being of considerably greater diameter than the screw to prevent the end of plate 39, is turned a nut 53, which is adjustable upon the screw. 'VVhen the wedge is used, it is inserted between the edge 54 and the jamb of a closed door or window, whereby the diverging members or portions of the two plates 39 and 40 are forced more or less closely together, according to the accuracy with which the door or window is fitted in the jamb. The tree'end of the plate 39 is depressed thereby and removed from contact with the thumb-nut 53. If the space between the door and jamb or. between the window and jamb is greater than usual, the wedge 47 is adjusted to place the spring 48 under sufiicient tension, so that when the door or window is opened it will lift the plate 39 into contact with the thumb-nut 53. The nut is then adjusted to any desired point, provided, only, that it shall remain out of contact with the plate 39 as long as the door or window remains undisturbed. hen thus arranged, a clip 56, of brass or other suitable metal, is attached to the plate 39 and connected by a wire 57 to a binding-post 58, and thence by a wire 59 to the wire 34. The

screw 51 is connected by a wire 60 to a binding-post 61, and thence'by a wire 62 to the wire 33. The instant the door is disturbed or the window raised the wedge portion of the device is released, and the circuit is established through wire 33, Wire 62, bindingpost 61, wire 60, screw 51, thumb-nut 53, plate 39, clip 56, wire 57, binding-post 58 and wire 59, wire 34, alarm3l, andwire 36, backto battery.

The. electric wedge may be easily and quickly applied to any door, window, or any other part of a building, and adjusted in a magnet 'to any desired point. It does not mark or mar the wood-work, is absolutely certain in action, is comparatively inexpensive, and is so simple as to be readily and easily understood and operated by any person.

hat I claim is l. The combination, with a series or train of connected expansible disks having a stem or neck at one end ofthe train, of a lever pivotally connected at one end to said stein and at the other end to a link, pivoted indexarm' having its end connected to said link,- an arc-shaped scale-plate insulated from its support, a slide adjustable on said scale plate and having a contact-point adapted to en-' gage a tip upon the index, an alarm mechanism, and a battery connected with the conducting-support for the index and with the scale-plate through the alarm mechanism, su bstantially as described.

2. The combination, with a series or train I of connected expansion-diskshaving a stem or neck moved by such expansion, of a lever mounted upon an adjustable support and connected at one end to said stem, a link connected to the other end of said lever, an index-arm pivoted upon a conducting support or bracket and connected to the link, a scale.- plate over which the index sweeps, a-side adj ustable upon and having a set-screw clamping it to said scale-plate, said slide having a platinum tip on the index, an alarm mechanism connected to one pole" of abattery and to the scale-plate, and a battery connected to the conducting-support for the index and to the bell mechanism, substantially as described.

In an automatic alarm, a circuit-making device composed of two diverging conducting-plates adapted to be compressed between the rigid and movable members of an entrance, one of said plates being provided with a screwbolt insulated and extending upward through an opening in the other plate, a thumb-nut adjustable upon said bolt above said plate, a spring separating the plates, and wires connecting a battery with an audible alarm through the bolt, the thumb-nut, and one of the plates, substantially as described.

4. In an automatic alarm, the combination, with the conducting-plates diverging from a point of union, of a spring throwing the free endsof said plates apart, means for adjusting the tension of said spring, a screw-bolt mounted on and insulated from the free end of one of said plates and having its threaded end passing through an-opening in, but out .of contact with, the end of the other plate, a

thumb-nut adjustable on said bolt, and an audible alarm connected with-one pole of a battery and with the movable plate, the other in and insulated from the free end of the lower plate and having its threaded end projecting through an opening in the corresponding end of the upper plate, a thumb-nut adjustable on the bolt, an attachable and detachable spring-clip connected to the upper plate and having a wire passing to an audible alarm, and a battery connected with said alarm and with the insulated screw-bolt, substantially as described.

6. In an automatic alarm, the combination, with the plates of conducting material united at one end and diverging in wedge shape, and "one plate being provided with a square shoutder adjacent to the diverging portions, of a 'U-shaped spring having one member riveted" to one of said plates and the other resting in a channel in an adjustable non-conducting wedge, whereby the tension of the spring is varied, a screw-bolt mounted on and insulated from the end of one of said plates and hav- In testimony whereot Ihaveaflixed my siging its threaded end passing through an opennature in presence of two witnesses. ing in the end of the other plate, a thumbnut adjustable on said bolt, aspring-clip con- WILLTAM GEE. 5 nected with the movable plate, and an audi- Witnesses:

ble alarm and battery connected up with said SAMUEL S. HADDEN,

parts, substantially as described. LEWIS I-I. GENTLEs. 

